Hi,
Brand new Dell WinXp pc
Dell 17" CRT monitor (15.9 v.i.s.0.28 dot pitch)
30-day trial of Photoshop CS2
I've taken a manip image I made @ 439 px x 337 px
http://www.jetclover.com/deltajc2.jpg
and incrementally resized it in increments of 10% upto 613 px x 471px for (I hoped) the centre of a wallpaper. Then I've used an action called De-colour by Lil Flame (duplicate current layer, duplicate current layer, grain, gaussian blur, set current layer, desaturate, merge layers, brightness/contrast, flatten image).
http://www.jetclover.com/deltajc2sunday2.jpg
All looks as okay as I think it can be in Photoshop CS2. I save the file as a *.jpg and upload it to my webspace to check it. It looks okay at a screen res of 1024 x 768 and 800 x 600 and in a colour quality Highest (32 bit) in my display properties. But if I look at it at the same res(es) in a colour quality Medium (16 bit) it gets wavy, patchy lines of distorted colour on it and looks blech!
Thinking it was the De-colour action, I tried uploading a version where the action hadn't been applied, and I get the same thing.
So, any ideas? Granted, the pic quality is poor to begin with but is there an action or a filter that will help it look okay at 16-bit?
Cheers,
Gilly
My web image @ 16-bit is blech!
it's normal to see problems with 16 bits modes ...
you'll see problem with any picture that contains smooth gradients.
16 bits modes is a poor mode. The only reason to use this mode is if you have a very slow PC (pentium II with a crappy graphic card) .
All problems disappears wit 24bits and 32 bits modes.
Notice: 24 bits is the slowest mode, 32 bit the fastest.
Some people believes that 16bits is faster than 32bits , that's not true.
You may not use 32bits if your graphic card doesn't support this mode (crappy graphic card, again)
you'll see problem with any picture that contains smooth gradients.
16 bits modes is a poor mode. The only reason to use this mode is if you have a very slow PC (pentium II with a crappy graphic card) .
All problems disappears wit 24bits and 32 bits modes.
Notice: 24 bits is the slowest mode, 32 bit the fastest.
Some people believes that 16bits is faster than 32bits , that's not true.
You may not use 32bits if your graphic card doesn't support this mode (crappy graphic card, again)
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If you convert a 24bit image to a 16bit image, you need to apply some dithering to hide the decrease in quality. The free 5_6_5 plugin does that. You can get it from http://www.telegraphics.com.au/sw/